铅锌尾矿库沟道地表水和底泥重金属污染研究  

Heavy Metal Pollution in Surface Water and Sediment in Ditches of Lead-zinc Tailing Reservoir:a Morphological Study

作　　者：刘玥[1] 何勇 

机构地区：[1]大同大学煤炭工程学院,山西大同037003 [2]澳大利亚陕西矿业有限公司

出　　处：《辽东学院学报（自然科学版）》2014年第1期41-44,共4页Journal of Eastern Liaoning University:Natural Science Edition

基　　金：陕西省自然科学基金项目(SJ08-ZT08-3)

摘　　要：为了更好的了解重金属在矿区水体环境中的富集规律,以秦岭某铅锌矿区尾矿库沟道地表水及底泥中的重金属为研究对象,测试各种重金属含量,并采用Tessier五步连续提取法对底泥中重金属的5种形态进行分析。结果表明,经过长期沉淀的沟道流水底泥中,重金属含量相对稳定,且具有饱和性。Zn、Pb、Cd的浓度分别达到422.8 mg/kg、1 008.8 mg/kg、22.1 mg/kg。底泥中重金属形态Pb以铁锰氧化物结合态为主,Zn、Cd以有机结合态为主。Zn、Pb产生的环境效应明显。In order to better understand the enrichment regularity of heavy metals in water environment in min-ing area, heavy metals in surface water and sediment in ditches of a lead -zinc tailing reservoir in Qinling area were morphologically studied .The content of heavy metals in five forms was analyzed with Tessier five step sequen-tial extractions method .The result shows that the content of heavy metals in long -term sediment is relatively stable and saturable .The concentrations of Zn , Pb and Cd are 422.8 mg/kg, 1 008.8 mg/kg and 22.1 mg/kg, respec-tively .The Pb in sediment exists as an oxide combination with iron and manganese , while Zn and Cd in an organic combination state .The environmental effects of Zn and Pb are evident .

关 键 词：铅锌尾矿库 重金属 TESSIER连续提取法 形态分析 

分 类 号：X753[环境科学与工程—环境工程]